99690305 has 32 divisors (see below), whose sum is σ = 142708608. Its totient is φ = 65894400.

The previous prime is 99690299. The next prime is 99690307. The reversal of 99690305 is 50309699.

It is a happy number.

It is not a de Polignac number, because 99690305 - 2⁴ = 99690289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99690307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46865 + ... + 48945.

It is an arithmetic number, because the mean of its divisors is an integer number (4459644).

Almost surely, 2^99690305 is an apocalyptic number.

It is an amenable number.

99690305 is a deficient number, since it is larger than the sum of its proper divisors (43018303).

99690305 is a wasteful number, since it uses less digits than its factorization.

99690305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 99690305 is about 9984.5032425254. The cubic root of 99690305 is about 463.6792289134.

The spelling of 99690305 in words is "ninety-nine million, six hundred ninety thousand, three hundred five".